Cathedral Analysis (Opinion)

After reading Cathedral by Raymond Carver a piece of Carver's symbolism of the Cathedral and the Blind man opened my eyes to look further than possible. Because we see it doesn't mean we understand. For one to truly appreciate what one see, the person must look beyond the obvious. A Cathedral is a building that we know. But what does a Cathedral symbolize?, what does the building consists of? Why must it be so enormous in size? Why are there monsters outside the Cathedral? I love this short story i'll admit in the beginning of the story I felt envious towards the blind man because everything seemed to focus around him but in all actuality the old man symbolized what we take for granted.